<template>
  <div class="yuan">
    <h2>圆形</h2>
    <hr />
    <div ref="myChart" :style="{ width: '500px', height: '300px' }"></div>
  </div>
</template>

<script>
export default {
  name: 'hello',
  data() {
    return {
      msg: 'Welcome to Your Vue.js App'
    }
  },
  mounted() {
    this.drawLine()
  },

  methods: {
    drawLine() {
      var option
      let myChart = this.$echarts.init(this.$refs.myChart)
      option = {
        title: {
          text: 'Referer of a Website',
          subtext: 'Fake Data',
          left: 'center'
        },
        tooltip: {
          trigger: 'item'
        },
        legend: {
          orient: 'vertical',
          left: 'left'
        },
        series: [
          {
            name: 'Access From',
            type: 'pie',
            radius: '50%',
            data: [
              { value: 1048, name: 'Search Engine' },
              { value: 735, name: 'Direct' },
              { value: 580, name: 'Email' },
              { value: 484, name: 'Union Ads' },
              { value: 300, name: 'Video Ads' }
            ],
            emphasis: {
              itemStyle: {
                shadowBlur: 10,
                shadowOffsetX: 0,
                shadowColor: 'rgba(0, 0, 0, 0.5)'
              }
            }
          }
        ]
      }

      option && myChart.setOption(option)
    }
  }
}
</script>

<style scoped>
.yuan {
  float: left;
  overflow: hidden;
  width: 50%;
  height: 400px;
  background: rgb(185, 191, 122);
}
</style>
